twenty one pilots performed Sunday afternoon and both members left stage to join the crowd. Here drummer Josh Dun crowdsurfed on a platform with a small drum kit. Jessica L. Wass—The Tech May. 9, 2016 Facebook Twitter Reddit Print twenty one pilots performed Sunday afternoon and both members left stage to join the crowd. Here drummer Josh Dun crowdsurfed on a platform with a small drum kit. Jessica L. Wass—The Tech